FIELD: deep well drilling, particularly for hydrodynamic well wall treatment with mudding agent during drilling.
SUBSTANCE: device comprises hollow body, diffuser with throat smoothly reducing in mudding agent flow direction and installed in the body, hollow trap secured in body under diffuser, mudding nozzles, which connect trap interior with hole clearance through pipes and adapter threadedly connected with the hollow body. Diffuser may perform axial movement for diffuser adjustment. Mudding nozzles are installed in adapter wall orifices.
EFFECT: increased mudding efficiency and drill performances.
3 cl, 1 dwg
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